/****************************************************************************
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** Copyright (C) 2015 The Qt Company Ltd.
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** This file is part of the examples of the Qt Wayland module
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#ifndef WINDOWCOMPOSITOR_H
#define WINDOWCOMPOSITOR_H

#include <QtWaylandCompositor/QWaylandCompositor>
#include <QtWaylandCompositor/QWaylandSurface>
#include <QtWaylandCompositor/QWaylandView>
#include <QtWaylandCompositor/QWaylandShellSurface>
#include <QTimer>

QT_BEGIN_NAMESPACE

class QWaylandShell;
class QWaylandShellSurface;

class WindowCompositorView : public QWaylandView
{
    Q_OBJECT
public:
    WindowCompositorView() : m_texture(0), m_shellSurface(0) {}
    GLuint getTexture();
    QPointF position() const { return m_position; }
    void setPosition(const QPointF &pos) { m_position = pos; }
    bool isCursor() const;
    bool hasShell() const { return m_shellSurface; }
private:
    friend class WindowCompositor;
    GLuint m_texture;
    QPointF m_position;
    QWaylandShellSurface *m_shellSurface;
};

class WindowCompositor : public QWaylandCompositor
{
    Q_OBJECT
public:
    WindowCompositor(QWindow *window);
    ~WindowCompositor();
    void create() Q_DECL_OVERRIDE;

    void startRender();
    void endRender();

    QList<WindowCompositorView*> views() const { return m_views; }
    void raise(WindowCompositorView *view);

    void handleMouseEvent(QWaylandView *target, QMouseEvent *me);
    void handleResize(WindowCompositorView *target, const QSize &initialSize, const QPoint &delta, int edge);
    void handleDrag(WindowCompositorView *target, QMouseEvent *me);

    bool popupActive() const { return !m_popupViews.isEmpty(); }
    void closePopups();
protected:
    void adjustCursorSurface(QWaylandSurface *surface, int hotspotX, int hotspotY);

signals:
    void startMove();
    void startResize(int edge);
    void dragStarted(WindowCompositorView *dragIcon);
    void frameOffset(const QPoint &offset);

private slots:
    void surfaceMappedChanged();
    void surfaceDestroyed();
    void surfaceCommittedSlot();
    void viewSurfaceDestroyed();
    void onStartMove();
    void onStartResize(QWaylandInputDevice *inputDevice, QWaylandShellSurface::ResizeEdge edges);

    void startDrag();

    void triggerRender();

    void onSurfaceCreated(QWaylandSurface *surface);
    void onCreateShellSurface(QWaylandSurface *s, QWaylandClient *client, uint id);
    void onSetTransient(QWaylandSurface *parentSurface, const QPoint &relativeToParent, QWaylandShellSurface::FocusPolicy focusPolicy);
    void onSetPopup(QWaylandInputDevice *inputDevice, QWaylandSurface *parent, const QPoint &relativeToParent);

    void updateCursor();
private:
    WindowCompositorView *findView(const QWaylandSurface *s) const;
    QWindow *m_window;
    QList<WindowCompositorView*> m_views;
    QList<WindowCompositorView*> m_popupViews;
    QWaylandShell *m_shell;
    QWaylandView m_cursorView;
    int m_cursorHotspotX;
    int m_cursorHotspotY;
};


QT_END_NAMESPACE

#endif // WINDOWCOMPOSITOR_H